30/04/2020

TETRA in Hazardous Environments

Mario Micheli OTE S.p.A.

Dublin, 13th April, 2005

1

Definition of the “ Hazardous Area ”

Area with possible presence of an explosive atmosphere (flammable gases, vapours, or liquids, combustible dusts or ignitiable fibers & flyings)

Products for use in “ Hazardous Area ”

Products for use in hazardous environments need certification : ATEX

AT

mosphère

Ex

plosible

(Europe)

FM

F

actory

M

utual

(USA)

ATEX Directive (94/9/EC)

The

European Directive 94/9/EC (ATEX Directive) has been mandatory from 1st July 2003

.

It covers all equipment and protection systems to be used in potentially explosive atmospheres.

The countries covered by the Directive European Union

: Belgium, Denmark, Germany, Greece, Spain, France, Ireland, Italy, Luxembourg, Netherlands, Austria, Portugal, Finland, Sweden, U.K.

Cyprus

,

Czech Republic

,

Estonia

,

Hungary

,

Latvia

,

Lithuania

,

Malta

, Poland,

Slovakia

,

Slovenia

European Free Trade Area (EFTA)

: Liechtenstein, Iceland, Norway, Switzerland

ATEX Directive (94/9/EC)

The Directive is implemented in Europe by means of each national authority transposing its provisions into their legislation.

e.g. Ireland European Communities Regulations, Statutory Instruments number 83 of 1999 .

ATEX Directive (94/9/EC)

•

Harmonised protection requirements to all type of equipment for use in hazardous environments : Electrical Mechanical Others (protection cloth, helmets etc.)

•

This is an increase in scope compared to previous national regulations.

ATEX Directive (94/9/EC)

EQUIPMENT SPECIFICALLY EXCLUDED FROM THE ATEX DIRECTIVE

• • • •

Medical devices Seagoing vessels Means of transport Equipment for use by the armed force

ATEX Directive (94/9/EC)

Areas of APPLICATIONS • • • • • •

Fire Brigades Petrolchemical Plants Fixed offshore platforms Ports and Airports Industries (chemical, pharmaceutical, ...) Mines

ATEX Marking

Manufacturer Product Accredited Test Centre & Certification Number ATEX Class Extended Ambience Temperature

ATEX Marking

II 2G

EEx ib IIC T4 Classification of the

hazardous areas : Flammable substances

Present continuously or for long periods or frequently Likely to occur occasionally Not likely to occur and, if it occurs, it persists for a short period only Present continuously or for long periods or frequently Likely to occur occasionally Not likely to occur and, if it occurs, it persists for a short period only

Subdivision of hazardous places

ZONE 0 ZONE 1 ZONE 2 ZONE 20 ZONE 21 ZONE 22

Required Marking Equipment group Category group II 1G II II 1G , 2G 1G , 2G , 3G II II II 1D 1D , 2D 1D , 2D , 3D

MINES

I M1 , M2

ATEX Marking

II 2G

EEx

ib IIC T4

“Conforms to European Ex-Standards”

ATEX Marking

II 2G EEx

ib

IIC T4

Type of protection : Marking d e ia ib p m o q Type of protection Principle of protection

Flameproof enclosure (control stations, motors, fuses, power electronics) Increased safety (motors, luminaries) Intrinsic safety (radio equipment, automation technology) Pressurization (switch-and-control cupboards, analyze-apparatus, computers) Encapsulation (coils of motors or relays, solenoid valves) Oil immersion (transformers, relays, control stations, magnetic contactors) Powder filling (capacitors, transformers)

An propagation of an explosion inside to outside is excluded Avoidance of arc, sparks and excessive temperature Limitation of energy as well as arcs and temperature Ex-atmosphere keep at a distance from the ignition source Ex-atmosphere keep at a distance from the ignition Ex-atmosphere keep at a distance from the ignition source An propagation of an ignition inside to outside is excluded May be used in

Zone 1 , 2 Zone 1 , 2 Zone 0, 1 , 2 Zone 1 , 2 Zone 1 , 2 Zone 1 , 2 Zone 1 , 2 Zone 1 , 2

ATEX Marking

II 2G EEx ib

IIC T4

Classification of the

Gases:

ATEX Marking

II 2G EEx ib IIC T4

Group II (Gases) Category 2 (Zone 1 & Zone 2) Conform to European Ex standard Type of protection : intrinsic safety Explosion Subgroup Temperature Class

Products for use in “ Hazardous Area ”

TETRA equipment

to be used in Hazardous Environments

available on the market

Motorola MTP 700

FM Approved: •

Intrinsic Safe Division 1, Class I, II, III Groups D, F, G

•

Non incendive Division 2, Class I Groups A,B,C,D with battery PMNN4049A, Temp Code T3C

OTE PUMA T3-Ex

ATEX Certified: II 2G ib IIC T4 • •

Designed for Fire Brigades Oil & Gas Industries

OTE PUMA T3-Ex

45 °

• • • • • •

1W RF power 50 MHz switching bandwidth Excellent audio quality Dual mode:

–

TETRA

–

Conventional Analogue Wireless interface to accessories Build In Dead Man switch

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